We brush our _________(tooth) _______(two ) a day

问题描述:

We brush our _________(tooth) _______(two ) a day

teeth
twice

teeth twice

teeth表示复数,twice表示两次

tooth------(p.l.)teeth two--------变为次数twice

teeth twice
我们每天刷两次牙.
tooth 复数形式是不规则变形 teeth
表示两次 twice